Attribution

TrailPrint3D relies on several open data sources and third-party services to generate terrain and map data. This page lists those sources and the terms under which their data is used.

Elevation Data

opentopodata.org ↗ OpenTopoData Used as the primary elevation API. Provides access to multiple elevation datasets including SRTM, EU-DEM, and NZ-DEM. TrailPrint3D queries OpenTopoData to retrieve terrain height values along and around the loaded GPX route. Open-source project — MIT License
AWS Open Data ↗ Terrain Tiles (Tilezen / Mapzen) Used as an alternative elevation data source. Terrain Tiles provide global elevation data derived from multiple public-domain sources including SRTM, GMTED2010, and ETOPO1. Public domain / Creative Commons — see individual dataset licenses
NASA JPL ↗ SRTM (Shuttle Radar Topography Mission) NASA/USGS elevation dataset available via OpenTopoData and Terrain Tiles. SRTM provides near-global 30m resolution digital elevation data collected during a Space Shuttle mission in 2000. Public domain (NASA)
Copernicus / EEA ↗ EU-DEM (European Digital Elevation Model) High-resolution 25m elevation dataset for Europe, available via OpenTopoData. Produced by the Copernicus Land Monitoring Service under the European Environment Agency. Copernicus Land Monitoring Service — free use with attribution
LINZ ↗ NZ DEM (New Zealand 8m DEM) High-resolution 8m elevation dataset for New Zealand, available via OpenTopoData. Sourced from Land Information New Zealand (LINZ). Creative Commons Attribution 4.0 — © Land Information New Zealand
mapterhorn.com ↗ Mapterhorn Open terrain tile service used as an elevation data source. Provides global Terrarium-encoded terrain tiles derived from ESA's Copernicus GLO-30 DEM, with high-resolution coverage for parts of Europe. Open-source project — terrain data based on Copernicus DEM (free use with attribution)

Map & Geographic Data

openstreetmap.org ↗ OpenStreetMap Used to generate environmental elements around the route — including water bodies, forests, urban areas, buildings, and roads. TrailPrint3D fetches OSM data via the Overpass API to place these features on the 3D map. © OpenStreetMap contributors — Open Database License (ODbL)

Software

blender.org ↗ Blender TrailPrint3D is a Blender add-on and requires Blender (version 5.1 or higher) to run. Blender is a free and open-source 3D creation suite developed by the Blender Foundation. GNU General Public License v2+ (Blender itself)